Without being mainstream (and hence retarded), here are some of my favorites:

Any Colony 5 song.
Nightwish - End of all hope
Kamelot - Forever
Kamelot - Karma

Message me on AIM, almost all of my music is rush technoish music, I can't stand any other kind. I'll send you some (since most of it is somewhat rare and hard to find). The songs above are just a few that popped into my head.